Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > 5th Wheel Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 04-17-2009, 01:02 AM   #1
Senior Member
 
Jeff_in_The_Dalles's Avatar
 
Join Date: Sep 2003
Location: The Dalles, Oregon
Posts: 544
Phantom power drain question...

When I got this 01 Patio Hauler, I parked it with the batteries fully charged, and checked voltage every so often to see how the batteries were holding a charge. It also had some outside lights, the kind with the switch on the housing, that didn't work.

Voltage held steady for several weeks, then I came out and had 0, flat dead. Plugged in the converter/charger, and one of the "dead" outside lights was now on...

I replaced all the outside lights with new ones (that are marked on the switch which position is on and which is off), and the trailer seemed to hold a charge fine unplugged for several weeks... Until yesterday when it was suddenly flat dead again.

After recharging, I pulled all the 12v fuses, and took an amp meter reading across each fuse holder with everything off. I got 0 on everything excep the kitchen, which was under 0.01 amp, which I figured might be the fridge brain? Anyhow, that certainly didn't kill the 2 big batteries that fast. The LP and Monoxide detectors also showed a very small current draw, as one would expect.

Then I noticed the stereo still had power (with all the fuses still removed).

At the battery, there are 2 black (positive) wires, a heavy cable that I figured ran to the fuse/distribution box, and a smaller wire that I figured was for the break-away switch.

I pulled those from the battery, and took an amp meter reading between the cable and battery post. The big cable was 0. The smaller one, though, was almost 2 amps.

I pulled the stereo out of its cabinet, and it had a connector between the stereo, and where all the wires go into the wall inside the cabinet.

I unplugged that, and the 2 amp draw from the smaller wire was now gone (0).

I guess I'm confused. Wouldn't a person expect the stereo to be powered by the distribution box, with a fuse?

Does it have its own direct line to the battery to avoid noise from motors, inverters, converters and stuff? If so, shouldn't it be fused?

Also the 2 amp draw when on standby (clock on) is obviously way too high. On the back it lists wire colors to be on keyed power, and another one for constant power. Both are hot all the time.

Sorry about the long post.
__________________

__________________
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking
Jeff_in_The_Dalles is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 04-18-2009, 12:57 PM   #2
Senior Member
 
Join Date: Aug 2000
Location: Walnut Creek Ca USA
Posts: 641
It may be that there is an in line fuse for the radio and clock at the radio. In that case, the hot lead probably goes through a circuit breaker. On my last Fiver there was a 80 amp circuit breaker that all 12 volt accessories went through before going to the fuses. Another circuit breaker that held only the trailer brakes through the break away switch, and finally, a 3rd circuit breaker that ran my detectors and fridge. If you can't determine where your discharge is coming from put a battery disconnect on the hot side of your batteries. In my current 5er, I have a solenoid that is a latch on latch off that disconnects all 12 volt draws except the trailer brakes from the system. It has a control panel inside the coach and a digital volt meter with a momentary switch to turn it on or off and a led to tell you know its status. Pretty cool. I don't now have to get a battery disconnect with this neat add on. In all other trailers big and small I had to buy a battery disconnect to prevent the batteries going dead during storage.
-Paul R. Haller-
__________________

__________________
Paul R. Haller is offline   Reply With Quote
Old 04-24-2009, 02:39 PM   #3
Senior Member
 
Join Date: Jul 2002
Location: Sarasota, Fl USA
Posts: 337
Jeff - - are you saying the stereo is a 12v unit? If so, that stereo should only pull about 4 -6 amps when turned on and idling. Something wrong. It should pull milliamps in the off condition.
__________________
2003 Dodge HO 6 speed Laramie Dually, Jordan controller, RDS fuel tank, Air Ride 25K hitch
Carriage 36' fiver, Onan 6500, Prosine 2K inverter, 3 slides, MORyde IS and Kingpin
FiverBob is offline   Reply With Quote
Old 04-25-2009, 03:58 AM   #4
Senior Member
 
Jeff_in_The_Dalles's Avatar
 
Join Date: Sep 2003
Location: The Dalles, Oregon
Posts: 544
Yeah, it's 12 volt, and it seems to pull close to 2 amps when on standby.

The draw on the smaller battery cable seems to go away when you unplug the stereo to where it connects to the trailer's wiring.

It almost acts like a capacitor is charging or something. Higher draw when you first put power to it, then it settles at like 1.8 amps.

It seems strange to me the thing isn't powered off the 12v fuse box and apparently has its own wire to the battery.

Anyway, I jumped in a toggle switch so I can cut power to the stereo when not in use. I think I'll see if I can find an RV stereo that will fit the same size hole, preferably with MP3 capability...
__________________
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking
Jeff_in_The_Dalles is offline   Reply With Quote
Old 04-26-2009, 08:14 PM   #5
Senior Member
 
Join Date: Jul 2002
Location: Sarasota, Fl USA
Posts: 337
Jeff - - good idea on that switch and I definitely would have at least an inline fuse to it.
__________________
2003 Dodge HO 6 speed Laramie Dually, Jordan controller, RDS fuel tank, Air Ride 25K hitch
Carriage 36' fiver, Onan 6500, Prosine 2K inverter, 3 slides, MORyde IS and Kingpin
FiverBob is offline   Reply With Quote
Old 04-27-2009, 01:31 AM   #6
Senior Member
 
Jeff_in_The_Dalles's Avatar
 
Join Date: Sep 2003
Location: The Dalles, Oregon
Posts: 544
Yeah, I was thinking the same thing.

Is it normal to have the stereo powered by its own wire to the battery, as opposed to being powered by the fuse pannel?
__________________
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking
Jeff_in_The_Dalles is offline   Reply With Quote
Old 04-27-2009, 07:32 AM   #7
Moderator Emeritus
 
RustyJC's Avatar


 
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
Quote:
Originally Posted by Jeff_in_The_Dalles View Post
Is it normal to have the stereo powered by its own wire to the battery, as opposed to being powered by the fuse pannel?
Jeff,

That particular stereo may have been susceptable to "hum" off the power converter, so they wired it directly to the battery in the hopes of getting cleaner +12VDC power.

Rusty
__________________
2016 Ram Longhorn 3500 Dually 4x4 CCLB, 385/900 Cummins, Aisin AS69RC, 4.10
2014.5 DRV Mobile Suites 38RSSA #6972
Come join us on a TEXAS BOOMERS rally!
RustyJC is offline   Reply With Quote
Old 04-27-2009, 05:36 PM   #8
Senior Member
 
Jeff_in_The_Dalles's Avatar
 
Join Date: Sep 2003
Location: The Dalles, Oregon
Posts: 544
Thanks. I thought that might be the case.

There's definately something gunnybag with the stereo. Now it won't respond when you press the volume for on/off, but will start playing a CD if you move the volume knob. The display is blank, and it won't respond to any of the other buttons.

Looks like there are several new in the box identical units on e-bay (surplus from the slowdown, I suppose). I'll see if I can snag one cheap, as I know it will fit the hole...
__________________
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking
Jeff_in_The_Dalles is offline   Reply With Quote
Old 04-28-2009, 06:37 PM   #9
Senior Member
 
Join Date: Jul 2002
Location: Sarasota, Fl USA
Posts: 337
Quote:
Originally Posted by RustyJC View Post
Jeff,
That particular stereo may have been susceptable to "hum" off the power converter, so they wired it directly to the battery in the hopes of getting cleaner +12VDC power.
Rusty
Rusty, I don't think I have ever seen a fuse block that isn't attached directly to the battery(s). Of course, the converter would also be attached to the battery(s). So, running a line directly to the battery for the stereo should not alter any possible hum. Am I wrong here. I know on my rig it is that way.

Bob
__________________
2003 Dodge HO 6 speed Laramie Dually, Jordan controller, RDS fuel tank, Air Ride 25K hitch
Carriage 36' fiver, Onan 6500, Prosine 2K inverter, 3 slides, MORyde IS and Kingpin
FiverBob is offline   Reply With Quote
Old 04-28-2009, 11:53 PM   #10
Senior Member
 
Jeff_in_The_Dalles's Avatar
 
Join Date: Sep 2003
Location: The Dalles, Oregon
Posts: 544
There are two cables attached to the fuse pannel. I presume one goes to the battery and one to the converter/charger on the other side of the unit.

Strangely, the stereo seems to be working as designed now. It seems like it works after it has had power for a day or two...
__________________
Dodge Ram dually laramie 4x4 w/jake, B&W, Brakesmart.
Kit Patio Hauler 394F toyhauler 5th wheel
Camo 680 Rincon, Green 500 Foreman, Blk twincam Roadking
Jeff_in_The_Dalles is offline   Reply With Quote
Old 04-29-2009, 07:55 AM   #11
Moderator Emeritus
 
RustyJC's Avatar


 
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
Quote:
Originally Posted by FiverBob View Post
Rusty, I don't think I have ever seen a fuse block that isn't attached directly to the battery(s).
Bob,

The closer you are to the converter (and many RVs such as my previous Jayco Designer XL 3610RLTS have the DC fuse block next to the converter with the battery a LONG way away, the more ripple (imposed AC) you'll see on the DC. At the battery, the ripple will usually be the lowest since the battery output is pure DC and the battery acts as a filter to block AC.

Yes, I realize electrically that every point on the +12VDC power line is theoretically the same, but that isn't the case when it comes to ripple. That's why, if a 12VDC load is having a problem with ripple (i.e., hum), one fix that may be tried is to power it directly from the +12VDC post of the battery before moving to line filters, etc.

Rusty
__________________

__________________
2016 Ram Longhorn 3500 Dually 4x4 CCLB, 385/900 Cummins, Aisin AS69RC, 4.10
2014.5 DRV Mobile Suites 38RSSA #6972
Come join us on a TEXAS BOOMERS rally!
RustyJC is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
W-22 Radiator coolant drain plug Max Hubrich Workhorse and Chevrolet Chassis Motorhome Forum 36 01-12-2012 09:25 AM
No House Power florida egg Alpine Coach Owner's Forum 4 12-31-2008 06:17 PM
Water heater drain plug question Farminatr Excel Owner's Forum 10 07-31-2008 05:28 PM
Fleetwood Power Lift Recall Beer Belly Pop Up, Tent Trailer and Teardrop Topics 2 11-12-2007 03:13 PM
Loss of Towing Power ---Modified LBZ rrraider Trailer Towing and Tow Vehicles Discussion 12 10-07-2007 01:42 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.